I deeply regret having to write to you in this way, since until now, you have always been a valued customer with whom we enjoyed a mutually profitable working relationship.

非常抱歉不得以用这样的方式与您通信，您一直是我们的尊贵客户，我们彼此的合作双赢而愉悦。

youdao

I deeply regret having to write to you in this way, since until now, you have always been a valued customer with whom we enjoyed a mutually profitable working relationship.

非常抱歉不得以用这样的方式与您通信，您一直是我们的尊贵客户，我们彼此的合作双赢而愉悦。

youdao